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Finding the Fourth Proportional to 56,474.60, 77,937.06 and 30,979.40

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Solution

The fourth proportional to 56,474.60, 77,937.06 and 30,979.40 is: 42,752.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,474.60 : 77,937.06 = 30,979.40 : x
  2. Step 2: Convert to fraction form
    56,474.60/77,937.06 = 30,979.40/x
  3. Step 3: Cross multiply
    56,474.60x = 77,937.06 × 30,979.40
  4. Step 4: Simplify right side
    56,474.60x = 2,414,443,356.56
  5. Step 5: Solve for x
    x = 2,414,443,356.56/56,474.60
  6. Step 6: Final answer
    x = 42,752.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.